Answer:
Explanation:
mass of block, m = 20 kg
let teh angle of inclination of the ramp with the horizontal is θ.
Weight of the block = mg
There are two components of the weight
The component of weight of block along the plane = mg Sinθ
The component of weight of block normal to the plane = mg Cosθ
Friction force is acting opposite to the motion, i.e., along the plane and upwards, f = μN = μ mg Cosθ
Look at the diagram to find the directions of force.
